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CEGL007972 Quercus (incana, margarettae, arkansana) - (Pinus echinata) / Schizachyrium scoparium Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: (Bluejack Oak, Sand Post Oak, Arkansas Oak) - (Shortleaf Pine) / Little Bluestem Woodland
Colloquial Name: Upper West Gulf Coastal Plain Xeric Sandhill (Mixed Oak Type)
Hierarchy Level: Association
Type Concept: This xeric sandhill of the West Gulf Coastal Plain and Upper West Gulf Coastal Plain ecoregions is dominated by a short-statured, open canopy of Quercus incana and Quercus margarettae with varying amounts of Pinus echinata. Stands dominated by either Pinus echinata or Pinus palustris are covered by different associations. Quercus arkansana may be present, as well, but is much less common in the region than the other nominal oaks. The herbaceous species serve as particularly good indicators of this type, many of which are both fidel to this habitat in the region and endemic to the West Gulf Coastal Plain. These indicators may include Astragalus soxmaniorum, Berlandiera pumila, Matelea cynanchoides, Cnidoscolus texanus, Commelina erecta, Croton argyranthemus, Dalea phleoides, Dalea villosa var. grisea, Delphinium carolinianum, Draba cuneifolia, Eriogonum longifolium, Eriogonum multiflorum, Froelichia floridana, Helianthemum georgianum, Heterotheca subaxillaris, Hymenopappus artemisiifolius, Monarda punctata, Opuntia humifusa, Paronychia drummondii, Pediomelum hypogaeum, Penstemon murrayanus, Physalis cf. heterophylla, Oenothera heterophylla, Schizachyrium scoparium, Scutellaria cardiophylla, Selaginella arenicola ssp. riddellii, Tetragonotheca ludoviciana, and Tradescantia reverchonii. Other characteristic species include Polygonella americana, Quercus marilandica, and Quercus stellata.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: In Oklahoma, this association is of limited extent and is restricted to southeastern Oklahoma (Atoka, Choctaw, McCurtain, and Pushmataha counties). Miller County Sandhills Preserve (Arkansas) and Boehler Seep and Sandhill Preserve (Oklahoma) contain examples of these Quercus incana woodlands (D. Zollner pers. comm.). This type is conceived as the primary xeric sandhill type of the Upper West Gulf Coastal Plain? [although, see ~Quercus arkansana - Quercus incana / Selaginella arenicola ssp. riddellii Woodland (CEGL003693)$$]. Shortleaf pine and Arkansas oak were listed as parenthetical nominals since they occur in some but not all examples for reasons unknown at this time.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The canopy is typically dominated by Quercus incana and Quercus margarettae, with varying amounts of Pinus echinata. Quercus arkansana may be present in limited areas, although this species is quite uncommon or poorly documented in parts of the region (Turner 2002, Evans and Brown in prep.). The herbaceous species serve as particularly good indicators of this type, many of which are both fidel to this habitat in the region and endemic to the West Gulf Coastal Plain (MacRoberts et al. 2002a). These indicators may include Astragalus soxmaniorum, Berlandiera pumila, Matelea cynanchoides, Cnidoscolus texanus, Commelina erecta, Croton argyranthemus, Dalea phleoides, Dalea villosa var. grisea, Delphinium carolinianum, Draba cuneifolia, Eriogonum longifolium, Eriogonum multiflorum, Froelichia floridana, Helianthemum georgianum, Heterotheca subaxillaris, Hymenopappus artemisiifolius, Monarda punctata, Opuntia humifusa, Paronychia drummondii, Pediomelum hypogaeum (= Psoralea hypogaea), Penstemon murrayanus, Physalis cf. heterophylla, Oenothera heterophylla, Schizachyrium scoparium, Scutellaria cardiophylla, Selaginella arenicola ssp. riddellii, Tetragonotheca ludoviciana, and Tradescantia reverchonii. Other characteristic species include Polygonella americana, Quercus marilandica, and Quercus stellata.
Dynamics: No Data Available
Environmental Description: This association occurs on some of the most xeric sites in the region, on coarse-textured, extremely deep and well-drained sandy soils.
Geographic Range: This type occurs in the Upper West Gulf Coastal Plain of Arkansas and Oklahoma, and may range into Louisiana and Texas.
Nations: US
States/Provinces: AR, LA?, OK, TX?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.687343
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.2 Cool Temperate Forest & Woodland Formation | F008 | 1.B.2 |
| Division | 1.B.2.Na Eastern North American Forest & Woodland Division | D008 | 1.B.2.Na |
| Macrogroup | 1.B.2.Na.1 White Oak - Southern Red Oak - Shortleaf Pine Forest & Woodland Macrogroup | M016 | 1.B.2.Na.1 |
| Group | 1.B.2.Na.1.g Loblolly Pine - Shortleaf Pine - Oak species Forest & Woodland Group | G013 | 1.B.2.Na.1.g |
| Alliance | A0386 Bluejack Oak - Arkansas Oak - Shortleaf Pine Woodland Alliance | A0386 | 1.B.2.Na.1.g |
| Association | CEGL007972 (Bluejack Oak, Sand Post Oak, Arkansas Oak) - (Shortleaf Pine) / Little Bluestem Woodland | CEGL007972 | 1.B.2.Na.1.g |
Concept Lineage: The concept subsumes types 3695 (TX only) and 4438
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- Diamond, D. D. 1993. Classification of the plant communities of Texas (series level). Unpublished document. Texas Natural Heritage Program, Austin. 25 pp.
- Evans, R. E., and L. E. Brown. No date. Checklist of the vascular plants of the Pineywoods vegetational region of Texas. Unpublished manuscript. [in preparation]
- Hoagland, B. 2000. The vegetation of Oklahoma: A classification for landscape mapping and conservation planning. The Southwestern Naturalist 45(4):385-420.
- MacRoberts, M. H., B. R. MacRoberts, B. A. Sorrie, and R. E. Evans. 2002a. Endemism in the West Gulf Coastal Plain: Importance of xeric habitats. Sida 20:767-780.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
- Turner, B. L. 2002. Vascular plant atlas of Texas. 2 volumes. Sida [in press].
- Zollner, Douglas. Personal communication. Ecologist, The Nature Conservancy, Arkansas Field Office, Little Rock.